<span style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt">I'm having an issue with an apache web server running the latest CentOS5
kernel (this issue is not new to the kernel). After a few days/weeks of
running the server will become unresponsive and will require a physical
reboot in order to come back online. The system is so unresponsive when
the issue occurs that login at console is not even possible. <br />
<br />
I have atop installed and have looked back before the crash to see what
happened process wise and I can see the http starts using a lot of
memory and CPU usage. The vmcommit jumps from 1.8 GB to 4.8GB in a
matter of a few minutes. The VSIZE of the httpd process jumps from 8.1GB
to 36.9GB. So apache is doing something -- but how can I get historical
data for this? I also see that paging is very active, probably why the server is unresponsive. I have looked through the apache logs and system logs and there is nothing
obvious that is consuming all that memory. I know of the server-status
module for apache but that is only useful if you can get to the server
during the crash (I can't) and doesn't have any historical data. <br />
<br />
The issue occurs seemingly randomly, last time in the middle of the night with little or no user traffic. <br />
<br />
James<br />
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